Saad, Noor Shah. “Pengintegrasian Komponen Pengetahuan Pedagogi Isi Kandungan (PCK) Dalam Pengajaran Pembelajaran Trigonometri: The Integration of Pedagogical Content Knowledge Components in The Teaching and Learning of Trigonometry”. Journal of Science and Mathematics Letters 1, no. 1 (June 18, 2009): 72–83. Accessed July 3, 2024. https://ojs.upsi.edu.my/index.php/JSML/article/view/328.